Monster ID,NAME@SKILL_NAME,mode (idle, chase, walk, attack),Skill ID,Skill Level,Cast Time,probability (1 = 0,01% 10000 = 100%),cooldown,Interruptable? (yes or no),target (Self, Target, Friend),condition (longrangeattacked = auto explicative RSRS),,,,,,,, (all these commas are used, don't forgot them)
Simplify for you:
1000,Scorpion@PR_LEXDIVINA,idle,76,5,10000,0,30000,yes,target,longrangeattacked,,,,,,,,
1000,Scorpion@PR_LEXDIVINA,chase,76,5,10000,0,30000,yes,target,longrangeattacked,,,,,,,,
1000,Scorpion@PR_LEXDIVINA,walk,76,5,10000,0,30000,yes,target,longrangeattacked,,,,,,,,
1000,Scorpion@PR_LEXDIVINA,attack,76,5,10000,0,30000,yes,target,longrangeattacked,,,,,,,,
Just change what you want.
If you want full screen lex just change the skill name and id.
Name = NPC_WIDESILENCE, ID = 663, and change the target to "self"
add in mob_skill_db